Erectile disfunction it is inability to arrive at or support erection sufficient for satisfaction of sexual activity. Erection arises up as a result of strengthening of the blood filling of penis. The sharp increase of inflow of blood fills stretches and does hard bodies. This state is supported by stopping of outflow of blood. Cause and regulate the offensive of erection nervous and hormonal systems, producing arousal or braking biochemical substances. 

The certain departments of spinal cord product these substances in reply to stimulation of genital organs and erogenous zones of body, and structure of cerebrum - under act of excitation from a commonunication with a sexual partner and sexual fantasies. Thus, erection arises up as a result of co-operation vascular, nervous and hormonal systems. Organic reasons of erectile dysfunction the receipt of blood or realization of nervous impulse reduce or shut out to the penis. Suppose presently, that erectile dysfunction approximately in 50% cases conditioned by mainly organic factors, in 20% - mainly psychogenic and in 30% - by combination of organic and psychogenic reasons. 

In most cases men with impotence feel an alarm, guilt or depression. These states yet more worsen the state of patient. Organic impotence begins gradually. The first signs are a decline of frequency of erections, appearance of incomplete erections, and then and complete loss of erectile function.

A libido is stored usually, therefore a disease substantially influences on quality of life, self-appraisal and self-esteem, causes tension and difficulties in a commonunication. Fear to appear helpless can in itself cause impotence. It is necessary to eliminate possibility of psychogenic impotence at her presence of patient direct to the sexual health specialist. Ideal erections not always are the sign of excellent health; however a passive penis in one or another situation can serve as warning that there is a screw loose somewhere. 

At treating of men for erectile disfunction of doctor mainly show an anxiety concerning cardiac diseases. Erection depends on a healthy blood stream to the penis. During erection vessels in a penis are filled with blood, what results in her origin. Many illnesses that strike blood vessels can interfere with a blood stream to the penis. Atherosclerosis) and high piesis (hypertension) can cause violations of blood stream to the penis and the same negatively to influence on possibility of man to arrive at erection. As well as all functions of our organism, erection depends on the signals of brain, that talk, when it is needed to operate, and when to stop. Impossibility to attain erection sometimes can be investigation that the receipt of signals on nerves from a brain to the penis is broken.